com.sun.opengl.impl
Class GLUquadricImpl
java.lang.Object
com.sun.opengl.impl.GLUquadricImpl
- All Implemented Interfaces:
- GLUquadric
public class GLUquadricImpl
- extends java.lang.Object
- implements GLUquadric
GLUquadricImpl.java
Created 22-dec-2003 (originally Quadric.java)
- Author:
- Erik Duijs, Kenneth Russell
Method Summary |
void |
drawCylinder(GL gl,
float baseRadius,
float topRadius,
float height,
int slices,
int stacks)
draws a cylinder oriented along the z axis. |
void |
drawDisk(GL gl,
float innerRadius,
float outerRadius,
int slices,
int loops)
renders a disk on the z = 0 plane. |
void |
drawPartialDisk(GL gl,
float innerRadius,
float outerRadius,
int slices,
int loops,
float startAngle,
float sweepAngle)
renders a partial disk on the z=0 plane. |
void |
drawSphere(GL gl,
float radius,
int slices,
int stacks)
draws a sphere of the given radius centered around the origin. |
int |
getDrawStyle()
Returns the drawStyle. |
int |
getNormals()
Returns the normals. |
int |
getOrientation()
Returns the orientation. |
boolean |
getTextureFlag()
Returns the textureFlag. |
void |
setDrawStyle(int drawStyle)
specifies the draw style for quadrics. |
void |
setNormals(int normals)
specifies what kind of normals are desired for quadrics. |
void |
setOrientation(int orientation)
specifies what kind of orientation is desired for. |
void |
setTextureFlag(boolean textureFlag)
specifies if texture coordinates should be generated for
quadrics rendered with qobj. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
GLUquadricImpl
public GLUquadricImpl()
setDrawStyle
public void setDrawStyle(int drawStyle)
- specifies the draw style for quadrics.
The legal values are as follows:
GLU.FILL: Quadrics are rendered with polygon primitives. The polygons
are drawn in a counterclockwise fashion with respect to
their normals (as defined with glu.quadricOrientation).
GLU.LINE: Quadrics are rendered as a set of lines.
GLU.SILHOUETTE: Quadrics are rendered as a set of lines, except that edges
separating coplanar faces will not be drawn.
GLU.POINT: Quadrics are rendered as a set of points.
- Parameters:
drawStyle
- The drawStyle to set
setNormals
public void setNormals(int normals)
- specifies what kind of normals are desired for quadrics.
The legal values are as follows:
GLU.NONE: No normals are generated.
GLU.FLAT: One normal is generated for every facet of a quadric.
GLU.SMOOTH: One normal is generated for every vertex of a quadric. This
is the default.
- Parameters:
normals
- The normals to set
setOrientation
public void setOrientation(int orientation)
- specifies what kind of orientation is desired for.
The orientation values are as follows:
GLU.OUTSIDE: Quadrics are drawn with normals pointing outward.
GLU.INSIDE: Normals point inward. The default is GLU.OUTSIDE.
Note that the interpretation of outward and inward depends on the quadric
being drawn.
- Parameters:
orientation
- The orientation to set
setTextureFlag
public void setTextureFlag(boolean textureFlag)
- specifies if texture coordinates should be generated for
quadrics rendered with qobj. If the value of textureCoords is true,
then texture coordinates are generated, and if textureCoords is false,
they are not.. The default is false.
The manner in which texture coordinates are generated depends upon the
specific quadric rendered.
- Parameters:
textureFlag
- The textureFlag to set
getDrawStyle
public int getDrawStyle()
- Returns the drawStyle.
- Returns:
- int
getNormals
public int getNormals()
- Returns the normals.
- Returns:
- int
getOrientation
public int getOrientation()
- Returns the orientation.
- Returns:
- int
getTextureFlag
public boolean getTextureFlag()
- Returns the textureFlag.
- Returns:
- boolean
drawCylinder
public void drawCylinder(GL gl,
float baseRadius,
float topRadius,
float height,
int slices,
int stacks)
- draws a cylinder oriented along the z axis. The base of the
cylinder is placed at z = 0, and the top at z=height. Like a sphere, a
cylinder is subdivided around the z axis into slices, and along the z axis
into stacks.
Note that if topRadius is set to zero, then this routine will generate a
cone.
If the orientation is set to GLU.OUTSIDE (with glu.quadricOrientation), then
any generated normals point away from the z axis. Otherwise, they point
toward the z axis.
If texturing is turned on (with glu.quadricTexture), then texture
coordinates are generated so that t ranges linearly from 0.0 at z = 0 to
1.0 at z = height, and s ranges from 0.0 at the +y axis, to 0.25 at the +x
axis, to 0.5 at the -y axis, to 0.75 at the -x axis, and back to 1.0 at the
+y axis.
- Parameters:
baseRadius
- Specifies the radius of the cylinder at z = 0.topRadius
- Specifies the radius of the cylinder at z = height.height
- Specifies the height of the cylinder.slices
- Specifies the number of subdivisions around the z axis.stacks
- Specifies the number of subdivisions along the z axis.
drawDisk
public void drawDisk(GL gl,
float innerRadius,
float outerRadius,
int slices,
int loops)
- renders a disk on the z = 0 plane. The disk has a radius of
outerRadius, and contains a concentric circular hole with a radius of
innerRadius. If innerRadius is 0, then no hole is generated. The disk is
subdivided around the z axis into slices (like pizza slices), and also
about the z axis into rings (as specified by slices and loops,
respectively).
With respect to orientation, the +z side of the disk is considered to be
"outside" (see glu.quadricOrientation). This means that if the orientation
is set to GLU.OUTSIDE, then any normals generated point along the +z axis.
Otherwise, they point along the -z axis.
If texturing is turned on (with glu.quadricTexture), texture coordinates are
generated linearly such that where r=outerRadius, the value at (r, 0, 0) is
(1, 0.5), at (0, r, 0) it is (0.5, 1), at (-r, 0, 0) it is (0, 0.5), and at
(0, -r, 0) it is (0.5, 0).
drawPartialDisk
public void drawPartialDisk(GL gl,
float innerRadius,
float outerRadius,
int slices,
int loops,
float startAngle,
float sweepAngle)
- renders a partial disk on the z=0 plane. A partial disk is similar to a
full disk, except that only the subset of the disk from startAngle
through startAngle + sweepAngle is included (where 0 degrees is along
the +y axis, 90 degrees along the +x axis, 180 along the -y axis, and
270 along the -x axis).
The partial disk has a radius of outerRadius, and contains a concentric
circular hole with a radius of innerRadius. If innerRadius is zero, then
no hole is generated. The partial disk is subdivided around the z axis
into slices (like pizza slices), and also about the z axis into rings
(as specified by slices and loops, respectively).
With respect to orientation, the +z side of the partial disk is
considered to be outside (see gluQuadricOrientation). This means that if
the orientation is set to GLU.GLU_OUTSIDE, then any normals generated point
along the +z axis. Otherwise, they point along the -z axis.
If texturing is turned on (with gluQuadricTexture), texture coordinates
are generated linearly such that where r=outerRadius, the value at (r, 0, 0)
is (1, 0.5), at (0, r, 0) it is (0.5, 1), at (-r, 0, 0) it is (0, 0.5),
and at (0, -r, 0) it is (0.5, 0).
drawSphere
public void drawSphere(GL gl,
float radius,
int slices,
int stacks)
- draws a sphere of the given radius centered around the origin.
The sphere is subdivided around the z axis into slices and along the z axis
into stacks (similar to lines of longitude and latitude).
If the orientation is set to GLU.OUTSIDE (with glu.quadricOrientation), then
any normals generated point away from the center of the sphere. Otherwise,
they point toward the center of the sphere.
If texturing is turned on (with glu.quadricTexture), then texture
coordinates are generated so that t ranges from 0.0 at z=-radius to 1.0 at
z=radius (t increases linearly along longitudinal lines), and s ranges from
0.0 at the +y axis, to 0.25 at the +x axis, to 0.5 at the -y axis, to 0.75
at the -x axis, and back to 1.0 at the +y axis.
Copyright 2005 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.